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1999 Jeep Grand Cherokee Performance Chips & Programmers

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Latest Customer Reviews

Superchips Flashpaq Tuner Reviews


Great Buy....

Reviewed By Atley T (Huntsville, AL) Reviewed for a 1999 Jeep Grand Cherokee —9/17/2008 8:44 PM

Installed on 1999 Jeep Grand Cherokee Limited WJ (4.7L 287 CID Quadra-Drive). Came the day after I ordered it and had it installed in less than half an hour. Quick and easy. Great for better gas mileage (went from about twelve mpg to about fourteen mpg, not much but when its that low anything helps), and a couple extra horses. Only dislike was that the tuner does not change speedometer for bigger tire sizes. But other than that GREAT BUY!!!

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Jet Performance Module Reviews


A cost extensive and striking tune up.

Reviewed By Axel H (SARASOTA, FL) Reviewed for a 1994 Jeep Grand Cherokee —11/18/2014 2:05 AM

I bougt this unit for my stock Grand Chereokee `94. It is easy to install, I only had to pick out the can for the coolant. The electronic and engine is in a better balance and more straight than before. For this price, this is an unbeatable tune up.

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Hypertech Max Energy Programmer Reviews


2005 Jeep Grand Cherokee Hypertuner

Reviewed By Bruce S (MARION, WI) Reviewed for a 2005 Jeep Grand Cherokee —4/17/2014 6:39 AM

Installed the program on my Jeep, you can program thermostat, tire size and regular or premium use fuel settings. Seems a little snappier, off the line but as far as huge performance gains, I'm not seeing it . Gas mileage is up approx. 1 to 1.5 mpg so over time it will pay for itself. i originally bought the unit to erase DTC codes after the N23 recall. It erases the DTCs and is very easy to use. Had bought a Superchips programmer but they do not support the 2005 Jeep 4.7 liter motor, Hypertune

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